Fill in the blanks:
(a) __________ and___________ metals can be cut with a knife
(b) Metals are ___________ conductors of heat and ___________.
(c) A liquid Nonmetal _________________
III. Give reasons:
(a) Screwdrivers have a wooden or a plastic handle
(b) Handles of cooking utensils are made of plastic
(c) Electric wires are made of Copper.
Answers
Answer:
1. a) sodium and potassium
b) good and electricity
c) bromine
2. a) Screwdriver is made of metal which is a good conductor of electricity. In order to prevent electric shocks by the screw driver its handle is made of wood. Wood is a poor conductor of electricity which protects from electric shocks and makes the screw driver safe from electric shocks.
Answer:
Fill in the blanks:
(a) Phosphorus is very ________non-metal.
(b) Metals are _____conductors of heat and ______.
(c) Iron is _______reactive than copper.
(d) Metals react with acids to produce _______ gas.
Answer:
(a) Phosphorus is very reactive non-metal.
(b) Metals are good conductors of heat and electricity.
(c) Iron is more reactive than copper.
(d) Metals react with acids to produce Hydrogen gas.